Buy 4 HP Rotary Screw Air Compressors – Small Frame, Big Game
Looking for dependable, continuous air power for your shop or business? Our collection of 4 HP rotary screw air compressors delivers exceptional performance with quiet operation and minimal maintenance—making them ideal for auto repair shops, woodworking facilities, CNC operations, and light industrial applications.
Unlike traditional piston units, these continuous-duty compressors are engineered to run 24/7 without overheating, all while maintaining noise levels around 61–65 dB—quiet enough for indoor use. Choose from a wide range of ELGi models, including tank-mounted compressors with integrated desiccant dryers and filters, base-mounted versions, and multiple voltage options (230V 1-phase, 230V/460V 3-phase) to match your power needs.
Whether you’re looking for clean, dry air or a compact footprint, our selection offers the best air compressors for workshops that demand efficiency and reliability.
Why Choose a 4 HP Rotary Screw Compressor?
- Whisper-quiet: Operates as low as 61 dBA
- Continuous duty: 100% uptime, no cool-downs
- Efficient output: 13–14 CFM @ 125–150 PSI
- Integrated dryers & filters: Clean, dry air for sensitive tools
- Multiple voltages: Single & 3-phase options available
- Durable construction: Built for long service life
Buying Tips: How to Choose the Right 4 HP Compressor
1. Tank Mount vs. Base Mount
- Tank Mount includes a 60-gallon tank—ready to use out of the box.
- Base Mount connects to an existing air system—great for modular setups.
2. Do You Need a Dryer?
- Choose a desiccant dryer model if you’re painting, CNC machining, or working in humid environments.
- Dryer-equipped models help protect your tools and reduce downtime.
3. Match Voltage to Your Power Supply
- 230V / 1-Phase: Standard for small shops and garages
- 230V or 460V / 3-Phase: Ideal for commercial and industrial applications
4. Compare CFM to Your Tool Requirements
Most tools fall between 5–10 CFM. A 4 HP compressor offers 13–14 CFM, covering multiple tools or machines at once.
